By the late 1940s, he was already employing modern classical ideas such as polytonality and dissonance, and working in unusual time signatures to create a distinctive jazz sound.    From Wordnik.com.  [NPR Topics: News] Reference

Many of Ives "compositions were ground breaking and anticipated 20th century musical techniques such as polytonality, atonality, 12 tone formations, polymetres, and polyrhythms.    From Wordnik.com.  [QCOnline Metro News] Reference

It isn't difficult at all to trace a line from either Milhaud's polytonality or "wrong note" basses or Cowell's cluster or late pandiatonic music to those chords of Wilson you describe.    From Wordnik.com.  [Our Prayer] Reference

Ms. Schneider also presented a two-movement piece combining "Thompson Fields" (featuring pianist Frank Kimbrough), an arresting and tranquil depiction of the view from a Minnesota grain silo, which, its in Americana subject matter and polytonality, suggested a modern jazz response to Charles Ives, and "Nimbus," a rather turbulent vignette of cloud formations spotlighting Steve Wilson on alto sax.    From Wordnik.com.  [July Time Is the Right Time to Hear the Ones We Love] Reference

They dipped our toes in polytonality and poly-dissonance.    From Wordnik.com.  [Thestar.com - Home Page] Reference

Sibelius was communicating in the new language of polytonality.    From Wordnik.com.  [VeryCD - 电驴资源订阅] Reference

He was a prolific French composer and violinist who further developed polytonality.    From Wordnik.com.  [About.com Music Education] Reference

The sound is about bracing polytonality, open improvisation, spare but demanding arrangements and futurist folkloric chant.    From Wordnik.com.  [www.philadelphiaweekly.com Philadelphia Weekly] Reference

Kind of Blue - cut Giant Steps, a breakneck exercise in polytonality that is perhaps the most carefully studied recording in jazz.    From Wordnik.com.  [The Globe and Mail - Home RSS feed] Reference

Until his death in 1981, he wrote defiantly neo-Romantic music, engaging with new-fangled techniques like atonality and polytonality only occasionally.    From Wordnik.com.  [Gramophone] Reference

GERRY HEMINGWAY QUINTET (Friday) Texture is often more of a priority than tempo in Gerry Hemingway's drumming, and his compositions reveal a fruitful fascination with polytonality.    From Wordnik.com.  [NYT > Home Page] Reference

The artistic triumphs are covered, of course: his groundbreaking college concert tours in the early 1950s that shot him to fame; his experiments with time signatures and polytonality.    From Wordnik.com.  [latimes.com - News] Reference

Ives formed his iconic sound by combining avant-garde techniques, such as this polytonality, with his formal classical education, all of which was informed by his background in traditional American music.    From Wordnik.com.  [Chicagoist] Reference

That Lewis, Anderson and King perfectly sustain their parts against Iverson's polytonality suggests that Iverson is overdubbed; it would explain why the musicians sound like they're playing on separate planets.    From Wordnik.com.  [Articles - JazzTimes] Reference